The National Geographic Magazine, Volume 112National Geographic Society, 1957 - Geography Indexes kept up to date with supplements. |
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Page 109
... radio . I watched the needle of our radio compass trying to search out the direc- tion from which the signals were coming , but it swung back and forth through a range of 60 degrees , refusing to make up its mind . Still , its average ...
... radio . I watched the needle of our radio compass trying to search out the direc- tion from which the signals were coming , but it swung back and forth through a range of 60 degrees , refusing to make up its mind . Still , its average ...
Page 799
... radio communications . Such radio communications are possible in the first place because ultraviolet rays of ex- tremely short wave length ionize air particles in the upper ionosphere . This ionization pro- vides a veritable sea of ...
... radio communications . Such radio communications are possible in the first place because ultraviolet rays of ex- tremely short wave length ionize air particles in the upper ionosphere . This ionization pro- vides a veritable sea of ...
Page
... Radio ZENITH RADIO CORPORATION CHICAGO 39 , ILLINOIS America's pioneer in fine radios for the home . Also makers of Television , High Fidelity Instruments , and fine Hearing Aids . TCA For Information see your local Travel Agent , or.
... Radio ZENITH RADIO CORPORATION CHICAGO 39 , ILLINOIS America's pioneer in fine radios for the home . Also makers of Television , High Fidelity Instruments , and fine Hearing Aids . TCA For Information see your local Travel Agent , or.
Contents
Flight to Adventure Flying Their Own Singleengine Plane a Daring | v |
To the Men at South Pole Station By Rear Admiral Richard E Byrd | 1 |
Fledgling Wings of the Air Force By Thomas W McKnew | 266 |
Copyright | |
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